I purchases one from from Dreyer Cycle in Indianapolis which is a "Moto-Comm" brand name, the model I got was a DSR 100, I could not believe how well it works, I believe the memory card holds up to 8 hours recording, it came with several different mounting brackets an external Mic. with lots of cable and it was only $200.00 as opposed to several that I looked at that were $500.00 and up, I think probably about all motorcycle dealers that deal in ATVs would sell them sell them.
www.motocomm.com
Eric C